xref: /openbmc/linux/arch/arm/Kconfig (revision 9d56dd3b083a3bec56e9da35ce07baca81030b03)
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9	bool
10	default y
11	select HAVE_AOUT
12	select HAVE_IDE
13	select RTC_LIB
14	select SYS_SUPPORTS_APM_EMULATION
15	select HAVE_OPROFILE
16	select HAVE_ARCH_KGDB
17	select HAVE_KPROBES if (!XIP_KERNEL)
18	select HAVE_KRETPROBES if (HAVE_KPROBES)
19	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
20	select HAVE_GENERIC_DMA_COHERENT
21	select HAVE_KERNEL_GZIP
22	select HAVE_KERNEL_LZO
23	help
24	  The ARM series is a line of low-power-consumption RISC chip designs
25	  licensed by ARM Ltd and targeted at embedded applications and
26	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
27	  manufactured, but legacy ARM-based PC hardware remains popular in
28	  Europe.  There is an ARM Linux project with a web page at
29	  <http://www.arm.linux.org.uk/>.
30
31config HAVE_PWM
32	bool
33
34config SYS_SUPPORTS_APM_EMULATION
35	bool
36
37config GENERIC_GPIO
38	bool
39
40config GENERIC_TIME
41	bool
42
43config GENERIC_CLOCKEVENTS
44	bool
45
46config GENERIC_CLOCKEVENTS_BROADCAST
47	bool
48	depends on GENERIC_CLOCKEVENTS
49	default y if SMP && !LOCAL_TIMERS
50
51config HAVE_TCM
52	bool
53	select GENERIC_ALLOCATOR
54
55config NO_IOPORT
56	bool
57
58config EISA
59	bool
60	---help---
61	  The Extended Industry Standard Architecture (EISA) bus was
62	  developed as an open alternative to the IBM MicroChannel bus.
63
64	  The EISA bus provided some of the features of the IBM MicroChannel
65	  bus while maintaining backward compatibility with cards made for
66	  the older ISA bus.  The EISA bus saw limited use between 1988 and
67	  1995 when it was made obsolete by the PCI bus.
68
69	  Say Y here if you are building a kernel for an EISA-based machine.
70
71	  Otherwise, say N.
72
73config SBUS
74	bool
75
76config MCA
77	bool
78	help
79	  MicroChannel Architecture is found in some IBM PS/2 machines and
80	  laptops.  It is a bus system similar to PCI or ISA. See
81	  <file:Documentation/mca.txt> (and especially the web page given
82	  there) before attempting to build an MCA bus kernel.
83
84config GENERIC_HARDIRQS
85	bool
86	default y
87
88config STACKTRACE_SUPPORT
89	bool
90	default y
91
92config HAVE_LATENCYTOP_SUPPORT
93	bool
94	depends on !SMP
95	default y
96
97config LOCKDEP_SUPPORT
98	bool
99	default y
100
101config TRACE_IRQFLAGS_SUPPORT
102	bool
103	default y
104
105config HARDIRQS_SW_RESEND
106	bool
107	default y
108
109config GENERIC_IRQ_PROBE
110	bool
111	default y
112
113config GENERIC_LOCKBREAK
114	bool
115	default y
116	depends on SMP && PREEMPT
117
118config RWSEM_GENERIC_SPINLOCK
119	bool
120	default y
121
122config RWSEM_XCHGADD_ALGORITHM
123	bool
124
125config ARCH_HAS_ILOG2_U32
126	bool
127
128config ARCH_HAS_ILOG2_U64
129	bool
130
131config ARCH_HAS_CPUFREQ
132	bool
133	help
134	  Internal node to signify that the ARCH has CPUFREQ support
135	  and that the relevant menu configurations are displayed for
136	  it.
137
138config GENERIC_HWEIGHT
139	bool
140	default y
141
142config GENERIC_CALIBRATE_DELAY
143	bool
144	default y
145
146config ARCH_MAY_HAVE_PC_FDC
147	bool
148
149config ZONE_DMA
150	bool
151
152config GENERIC_ISA_DMA
153	bool
154
155config FIQ
156	bool
157
158config ARCH_MTD_XIP
159	bool
160
161config GENERIC_HARDIRQS_NO__DO_IRQ
162	def_bool y
163
164if OPROFILE
165
166config OPROFILE_ARMV6
167	def_bool y
168	depends on CPU_V6 && !SMP
169	select OPROFILE_ARM11_CORE
170
171config OPROFILE_MPCORE
172	def_bool y
173	depends on CPU_V6 && SMP
174	select OPROFILE_ARM11_CORE
175
176config OPROFILE_ARM11_CORE
177	bool
178
179config OPROFILE_ARMV7
180	def_bool y
181	depends on CPU_V7 && !SMP
182	bool
183
184endif
185
186config VECTORS_BASE
187	hex
188	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
189	default DRAM_BASE if REMAP_VECTORS_TO_RAM
190	default 0x00000000
191	help
192	  The base address of exception vectors.
193
194source "init/Kconfig"
195
196source "kernel/Kconfig.freezer"
197
198menu "System Type"
199
200config MMU
201	bool "MMU-based Paged Memory Management Support"
202	default y
203	help
204	  Select if you want MMU-based virtualised addressing space
205	  support by paged memory management. If unsure, say 'Y'.
206
207choice
208	prompt "ARM system type"
209	default ARCH_VERSATILE
210
211config ARCH_AAEC2000
212	bool "Agilent AAEC-2000 based"
213	select CPU_ARM920T
214	select ARM_AMBA
215	select HAVE_CLK
216	help
217	  This enables support for systems based on the Agilent AAEC-2000
218
219config ARCH_INTEGRATOR
220	bool "ARM Ltd. Integrator family"
221	select ARM_AMBA
222	select ARCH_HAS_CPUFREQ
223	select HAVE_CLK
224	select COMMON_CLKDEV
225	select ICST525
226	help
227	  Support for ARM's Integrator platform.
228
229config ARCH_REALVIEW
230	bool "ARM Ltd. RealView family"
231	select ARM_AMBA
232	select HAVE_CLK
233	select COMMON_CLKDEV
234	select ICST307
235	select GENERIC_TIME
236	select GENERIC_CLOCKEVENTS
237	select ARCH_WANT_OPTIONAL_GPIOLIB
238	help
239	  This enables support for ARM Ltd RealView boards.
240
241config ARCH_VERSATILE
242	bool "ARM Ltd. Versatile family"
243	select ARM_AMBA
244	select ARM_VIC
245	select HAVE_CLK
246	select COMMON_CLKDEV
247	select ICST307
248	select GENERIC_TIME
249	select GENERIC_CLOCKEVENTS
250	select ARCH_WANT_OPTIONAL_GPIOLIB
251	help
252	  This enables support for ARM Ltd Versatile board.
253
254config ARCH_AT91
255	bool "Atmel AT91"
256	select GENERIC_GPIO
257	select ARCH_REQUIRE_GPIOLIB
258	select HAVE_CLK
259	help
260	  This enables support for systems based on the Atmel AT91RM9200,
261	  AT91SAM9 and AT91CAP9 processors.
262
263config ARCH_CLPS711X
264	bool "Cirrus Logic CLPS711x/EP721x-based"
265	select CPU_ARM720T
266	help
267	  Support for Cirrus Logic 711x/721x based boards.
268
269config ARCH_GEMINI
270	bool "Cortina Systems Gemini"
271	select CPU_FA526
272	select GENERIC_GPIO
273	select ARCH_REQUIRE_GPIOLIB
274	help
275	  Support for the Cortina Systems Gemini family SoCs
276
277config ARCH_EBSA110
278	bool "EBSA-110"
279	select CPU_SA110
280	select ISA
281	select NO_IOPORT
282	help
283	  This is an evaluation board for the StrongARM processor available
284	  from Digital. It has limited hardware on-board, including an
285	  Ethernet interface, two PCMCIA sockets, two serial ports and a
286	  parallel port.
287
288config ARCH_EP93XX
289	bool "EP93xx-based"
290	select CPU_ARM920T
291	select ARM_AMBA
292	select ARM_VIC
293	select GENERIC_GPIO
294	select HAVE_CLK
295	select COMMON_CLKDEV
296	select ARCH_REQUIRE_GPIOLIB
297	select ARCH_HAS_HOLES_MEMORYMODEL
298	help
299	  This enables support for the Cirrus EP93xx series of CPUs.
300
301config ARCH_FOOTBRIDGE
302	bool "FootBridge"
303	select CPU_SA110
304	select FOOTBRIDGE
305	help
306	  Support for systems based on the DC21285 companion chip
307	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
308
309config ARCH_MXC
310	bool "Freescale MXC/iMX-based"
311	select GENERIC_TIME
312	select GENERIC_CLOCKEVENTS
313	select ARCH_MTD_XIP
314	select GENERIC_GPIO
315	select ARCH_REQUIRE_GPIOLIB
316	select HAVE_CLK
317	help
318	  Support for Freescale MXC/iMX-based family of processors
319
320config ARCH_STMP3XXX
321	bool "Freescale STMP3xxx"
322	select CPU_ARM926T
323	select HAVE_CLK
324	select COMMON_CLKDEV
325	select ARCH_REQUIRE_GPIOLIB
326	select GENERIC_TIME
327	select GENERIC_CLOCKEVENTS
328	select GENERIC_GPIO
329	select USB_ARCH_HAS_EHCI
330	help
331	  Support for systems based on the Freescale 3xxx CPUs.
332
333config ARCH_NETX
334	bool "Hilscher NetX based"
335	select CPU_ARM926T
336	select ARM_VIC
337	select GENERIC_CLOCKEVENTS
338	select GENERIC_TIME
339	help
340	  This enables support for systems based on the Hilscher NetX Soc
341
342config ARCH_H720X
343	bool "Hynix HMS720x-based"
344	select CPU_ARM720T
345	select ISA_DMA_API
346	help
347	  This enables support for systems based on the Hynix HMS720x
348
349config ARCH_NOMADIK
350	bool "STMicroelectronics Nomadik"
351	select ARM_AMBA
352	select ARM_VIC
353	select CPU_ARM926T
354	select HAVE_CLK
355	select COMMON_CLKDEV
356	select GENERIC_TIME
357	select GENERIC_CLOCKEVENTS
358	select GENERIC_GPIO
359	select ARCH_REQUIRE_GPIOLIB
360	help
361	  Support for the Nomadik platform by ST-Ericsson
362
363config ARCH_IOP13XX
364	bool "IOP13xx-based"
365	depends on MMU
366	select CPU_XSC3
367	select PLAT_IOP
368	select PCI
369	select ARCH_SUPPORTS_MSI
370	select VMSPLIT_1G
371	help
372	  Support for Intel's IOP13XX (XScale) family of processors.
373
374config ARCH_IOP32X
375	bool "IOP32x-based"
376	depends on MMU
377	select CPU_XSCALE
378	select PLAT_IOP
379	select PCI
380	select GENERIC_GPIO
381	select ARCH_REQUIRE_GPIOLIB
382	help
383	  Support for Intel's 80219 and IOP32X (XScale) family of
384	  processors.
385
386config ARCH_IOP33X
387	bool "IOP33x-based"
388	depends on MMU
389	select CPU_XSCALE
390	select PLAT_IOP
391	select PCI
392	select GENERIC_GPIO
393	select ARCH_REQUIRE_GPIOLIB
394	help
395	  Support for Intel's IOP33X (XScale) family of processors.
396
397config ARCH_IXP23XX
398 	bool "IXP23XX-based"
399	depends on MMU
400	select CPU_XSC3
401 	select PCI
402	help
403	  Support for Intel's IXP23xx (XScale) family of processors.
404
405config ARCH_IXP2000
406	bool "IXP2400/2800-based"
407	depends on MMU
408	select CPU_XSCALE
409	select PCI
410	help
411	  Support for Intel's IXP2400/2800 (XScale) family of processors.
412
413config ARCH_IXP4XX
414	bool "IXP4xx-based"
415	depends on MMU
416	select CPU_XSCALE
417	select GENERIC_GPIO
418	select GENERIC_TIME
419	select GENERIC_CLOCKEVENTS
420	select DMABOUNCE if PCI
421	help
422	  Support for Intel's IXP4XX (XScale) family of processors.
423
424config ARCH_L7200
425	bool "LinkUp-L7200"
426	select CPU_ARM720T
427	select FIQ
428	help
429	  Say Y here if you intend to run this kernel on a LinkUp Systems
430	  L7200 Software Development Board which uses an ARM720T processor.
431	  Information on this board can be obtained at:
432
433	  <http://www.linkupsys.com/>
434
435	  If you have any questions or comments about the Linux kernel port
436	  to this board, send e-mail to <sjhill@cotw.com>.
437
438config ARCH_DOVE
439	bool "Marvell Dove"
440	select PCI
441	select GENERIC_GPIO
442	select ARCH_REQUIRE_GPIOLIB
443	select GENERIC_TIME
444	select GENERIC_CLOCKEVENTS
445	select PLAT_ORION
446	help
447	  Support for the Marvell Dove SoC 88AP510
448
449config ARCH_KIRKWOOD
450	bool "Marvell Kirkwood"
451	select CPU_FEROCEON
452	select PCI
453	select GENERIC_GPIO
454	select ARCH_REQUIRE_GPIOLIB
455	select GENERIC_TIME
456	select GENERIC_CLOCKEVENTS
457	select PLAT_ORION
458	help
459	  Support for the following Marvell Kirkwood series SoCs:
460	  88F6180, 88F6192 and 88F6281.
461
462config ARCH_LOKI
463	bool "Marvell Loki (88RC8480)"
464	select CPU_FEROCEON
465	select GENERIC_TIME
466	select GENERIC_CLOCKEVENTS
467	select PLAT_ORION
468	help
469	  Support for the Marvell Loki (88RC8480) SoC.
470
471config ARCH_MV78XX0
472	bool "Marvell MV78xx0"
473	select CPU_FEROCEON
474	select PCI
475	select GENERIC_GPIO
476	select ARCH_REQUIRE_GPIOLIB
477	select GENERIC_TIME
478	select GENERIC_CLOCKEVENTS
479	select PLAT_ORION
480	help
481	  Support for the following Marvell MV78xx0 series SoCs:
482	  MV781x0, MV782x0.
483
484config ARCH_ORION5X
485	bool "Marvell Orion"
486	depends on MMU
487	select CPU_FEROCEON
488	select PCI
489	select GENERIC_GPIO
490	select ARCH_REQUIRE_GPIOLIB
491	select GENERIC_TIME
492	select GENERIC_CLOCKEVENTS
493	select PLAT_ORION
494	help
495	  Support for the following Marvell Orion 5x series SoCs:
496	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
497	  Orion-2 (5281), Orion-1-90 (6183).
498
499config ARCH_MMP
500	bool "Marvell PXA168/910"
501	depends on MMU
502	select GENERIC_GPIO
503	select ARCH_REQUIRE_GPIOLIB
504	select HAVE_CLK
505	select COMMON_CLKDEV
506	select GENERIC_TIME
507	select GENERIC_CLOCKEVENTS
508	select TICK_ONESHOT
509	select PLAT_PXA
510	help
511	  Support for Marvell's PXA168/910 processor line.
512
513config ARCH_KS8695
514	bool "Micrel/Kendin KS8695"
515	select CPU_ARM922T
516	select GENERIC_GPIO
517        select ARCH_REQUIRE_GPIOLIB
518	help
519	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
520	  System-on-Chip devices.
521
522config ARCH_NS9XXX
523	bool "NetSilicon NS9xxx"
524	select CPU_ARM926T
525	select GENERIC_GPIO
526	select GENERIC_TIME
527	select GENERIC_CLOCKEVENTS
528	select HAVE_CLK
529	help
530	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
531	  System.
532
533	  <http://www.digi.com/products/microprocessors/index.jsp>
534
535config ARCH_W90X900
536	bool "Nuvoton W90X900 CPU"
537	select CPU_ARM926T
538	select ARCH_REQUIRE_GPIOLIB
539	select GENERIC_GPIO
540	select HAVE_CLK
541	select COMMON_CLKDEV
542	select GENERIC_TIME
543	select GENERIC_CLOCKEVENTS
544	help
545	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
546	  At present, the w90x900 has been renamed nuc900, regarding
547	  the ARM series product line, you can login the following
548	  link address to know more.
549
550	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
551		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
552
553config ARCH_PNX4008
554	bool "Philips Nexperia PNX4008 Mobile"
555	select CPU_ARM926T
556	select HAVE_CLK
557	help
558	  This enables support for Philips PNX4008 mobile platform.
559
560config ARCH_PXA
561	bool "PXA2xx/PXA3xx-based"
562	depends on MMU
563	select ARCH_MTD_XIP
564	select ARCH_HAS_CPUFREQ
565	select GENERIC_GPIO
566	select HAVE_CLK
567	select COMMON_CLKDEV
568	select ARCH_REQUIRE_GPIOLIB
569	select GENERIC_TIME
570	select GENERIC_CLOCKEVENTS
571	select TICK_ONESHOT
572	select PLAT_PXA
573	help
574	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
575
576config ARCH_MSM
577	bool "Qualcomm MSM"
578	select CPU_V6
579	select GENERIC_TIME
580	select GENERIC_CLOCKEVENTS
581	help
582	  Support for Qualcomm MSM7K based systems.  This runs on the ARM11
583	  apps processor of the MSM7K and depends on a shared memory
584	  interface to the ARM9 modem processor which runs the baseband stack
585	  and controls some vital subsystems (clock and power control, etc).
586
587config ARCH_RPC
588	bool "RiscPC"
589	select ARCH_ACORN
590	select FIQ
591	select TIMER_ACORN
592	select ARCH_MAY_HAVE_PC_FDC
593	select HAVE_PATA_PLATFORM
594	select ISA_DMA_API
595	select NO_IOPORT
596	select ARCH_SPARSEMEM_ENABLE
597	help
598	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
599	  CD-ROM interface, serial and parallel port, and the floppy drive.
600
601config ARCH_SA1100
602	bool "SA1100-based"
603	select CPU_SA1100
604	select ISA
605	select ARCH_SPARSEMEM_ENABLE
606	select ARCH_MTD_XIP
607	select ARCH_HAS_CPUFREQ
608	select CPU_FREQ
609	select GENERIC_GPIO
610	select GENERIC_TIME
611	select GENERIC_CLOCKEVENTS
612	select HAVE_CLK
613	select TICK_ONESHOT
614	select ARCH_REQUIRE_GPIOLIB
615	help
616	  Support for StrongARM 11x0 based boards.
617
618config ARCH_S3C2410
619	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
620	select GENERIC_GPIO
621	select ARCH_HAS_CPUFREQ
622	select HAVE_CLK
623	help
624	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
625	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
626	  the Samsung SMDK2410 development board (and derivatives).
627
628config ARCH_S3C64XX
629	bool "Samsung S3C64XX"
630	select GENERIC_GPIO
631	select HAVE_CLK
632	select ARCH_HAS_CPUFREQ
633	help
634	  Samsung S3C64XX series based systems
635
636config ARCH_S5PC1XX
637	bool "Samsung S5PC1XX"
638	select GENERIC_GPIO
639	select HAVE_CLK
640	select CPU_V7
641	help
642	  Samsung S5PC1XX series based systems
643
644config ARCH_SHARK
645	bool "Shark"
646	select CPU_SA110
647	select ISA
648	select ISA_DMA
649	select ZONE_DMA
650	select PCI
651	help
652	  Support for the StrongARM based Digital DNARD machine, also known
653	  as "Shark" (<http://www.shark-linux.de/shark.html>).
654
655config ARCH_LH7A40X
656	bool "Sharp LH7A40X"
657	select CPU_ARM922T
658	select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
659	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
660	help
661	  Say Y here for systems based on one of the Sharp LH7A40X
662	  System on a Chip processors.  These CPUs include an ARM922T
663	  core with a wide array of integrated devices for
664	  hand-held and low-power applications.
665
666config ARCH_U300
667	bool "ST-Ericsson U300 Series"
668	depends on MMU
669	select CPU_ARM926T
670	select HAVE_TCM
671	select ARM_AMBA
672	select ARM_VIC
673	select GENERIC_TIME
674	select GENERIC_CLOCKEVENTS
675	select HAVE_CLK
676	select COMMON_CLKDEV
677	select GENERIC_GPIO
678	help
679	  Support for ST-Ericsson U300 series mobile platforms.
680
681config ARCH_DAVINCI
682	bool "TI DaVinci"
683	select CPU_ARM926T
684	select GENERIC_TIME
685	select GENERIC_CLOCKEVENTS
686	select GENERIC_GPIO
687	select ARCH_REQUIRE_GPIOLIB
688	select HAVE_CLK
689	select ZONE_DMA
690	select HAVE_IDE
691	select COMMON_CLKDEV
692	select GENERIC_ALLOCATOR
693	select ARCH_HAS_HOLES_MEMORYMODEL
694	help
695	  Support for TI's DaVinci platform.
696
697config ARCH_OMAP
698	bool "TI OMAP"
699	select GENERIC_GPIO
700	select HAVE_CLK
701	select ARCH_REQUIRE_GPIOLIB
702	select ARCH_HAS_CPUFREQ
703	select GENERIC_TIME
704	select GENERIC_CLOCKEVENTS
705	help
706	  Support for TI's OMAP platform (OMAP1 and OMAP2).
707
708config ARCH_BCMRING
709	bool "Broadcom BCMRING"
710	depends on MMU
711	select CPU_V6
712	select ARM_AMBA
713	select COMMON_CLKDEV
714	select GENERIC_TIME
715	select GENERIC_CLOCKEVENTS
716	select ARCH_WANT_OPTIONAL_GPIOLIB
717	help
718	  Support for Broadcom's BCMRing platform.
719
720config ARCH_U8500
721	bool "ST-Ericsson U8500 Series"
722	select CPU_V7
723	select ARM_AMBA
724	select GENERIC_TIME
725	select GENERIC_CLOCKEVENTS
726	select COMMON_CLKDEV
727	help
728	  Support for ST-Ericsson's Ux500 architecture
729
730endchoice
731
732source "arch/arm/mach-clps711x/Kconfig"
733
734source "arch/arm/mach-ep93xx/Kconfig"
735
736source "arch/arm/mach-footbridge/Kconfig"
737
738source "arch/arm/mach-gemini/Kconfig"
739
740source "arch/arm/mach-integrator/Kconfig"
741
742source "arch/arm/mach-iop32x/Kconfig"
743
744source "arch/arm/mach-iop33x/Kconfig"
745
746source "arch/arm/mach-iop13xx/Kconfig"
747
748source "arch/arm/mach-ixp4xx/Kconfig"
749
750source "arch/arm/mach-ixp2000/Kconfig"
751
752source "arch/arm/mach-ixp23xx/Kconfig"
753
754source "arch/arm/mach-loki/Kconfig"
755
756source "arch/arm/mach-mv78xx0/Kconfig"
757
758source "arch/arm/mach-pxa/Kconfig"
759source "arch/arm/plat-pxa/Kconfig"
760
761source "arch/arm/mach-mmp/Kconfig"
762
763source "arch/arm/mach-sa1100/Kconfig"
764
765source "arch/arm/plat-omap/Kconfig"
766
767source "arch/arm/mach-omap1/Kconfig"
768
769source "arch/arm/mach-omap2/Kconfig"
770
771source "arch/arm/mach-orion5x/Kconfig"
772
773source "arch/arm/mach-kirkwood/Kconfig"
774
775source "arch/arm/mach-dove/Kconfig"
776
777source "arch/arm/plat-samsung/Kconfig"
778source "arch/arm/plat-s3c24xx/Kconfig"
779source "arch/arm/plat-s3c64xx/Kconfig"
780source "arch/arm/plat-s3c/Kconfig"
781source "arch/arm/plat-s5pc1xx/Kconfig"
782
783if ARCH_S3C2410
784source "arch/arm/mach-s3c2400/Kconfig"
785source "arch/arm/mach-s3c2410/Kconfig"
786source "arch/arm/mach-s3c2412/Kconfig"
787source "arch/arm/mach-s3c2440/Kconfig"
788source "arch/arm/mach-s3c2442/Kconfig"
789source "arch/arm/mach-s3c2443/Kconfig"
790endif
791
792if ARCH_S3C64XX
793source "arch/arm/mach-s3c6400/Kconfig"
794source "arch/arm/mach-s3c6410/Kconfig"
795endif
796
797source "arch/arm/plat-stmp3xxx/Kconfig"
798
799if ARCH_S5PC1XX
800source "arch/arm/mach-s5pc100/Kconfig"
801endif
802
803source "arch/arm/mach-lh7a40x/Kconfig"
804
805source "arch/arm/mach-h720x/Kconfig"
806
807source "arch/arm/mach-versatile/Kconfig"
808
809source "arch/arm/mach-aaec2000/Kconfig"
810
811source "arch/arm/mach-realview/Kconfig"
812
813source "arch/arm/mach-at91/Kconfig"
814
815source "arch/arm/plat-mxc/Kconfig"
816
817source "arch/arm/mach-nomadik/Kconfig"
818source "arch/arm/plat-nomadik/Kconfig"
819
820source "arch/arm/mach-netx/Kconfig"
821
822source "arch/arm/mach-ns9xxx/Kconfig"
823
824source "arch/arm/mach-davinci/Kconfig"
825
826source "arch/arm/mach-ks8695/Kconfig"
827
828source "arch/arm/mach-msm/Kconfig"
829
830source "arch/arm/mach-u300/Kconfig"
831
832source "arch/arm/mach-w90x900/Kconfig"
833
834source "arch/arm/mach-bcmring/Kconfig"
835
836source "arch/arm/mach-ux500/Kconfig"
837
838# Definitions to make life easier
839config ARCH_ACORN
840	bool
841
842config PLAT_IOP
843	bool
844	select GENERIC_CLOCKEVENTS
845	select GENERIC_TIME
846
847config PLAT_ORION
848	bool
849
850config PLAT_PXA
851	bool
852
853source arch/arm/mm/Kconfig
854
855config IWMMXT
856	bool "Enable iWMMXt support"
857	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
858	default y if PXA27x || PXA3xx || ARCH_MMP
859	help
860	  Enable support for iWMMXt context switching at run time if
861	  running on a CPU that supports it.
862
863#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
864config XSCALE_PMU
865	bool
866	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
867	default y
868
869if !MMU
870source "arch/arm/Kconfig-nommu"
871endif
872
873config ARM_ERRATA_411920
874	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
875	depends on CPU_V6 && !SMP
876	help
877	  Invalidation of the Instruction Cache operation can
878	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
879	  It does not affect the MPCore. This option enables the ARM Ltd.
880	  recommended workaround.
881
882config ARM_ERRATA_430973
883	bool "ARM errata: Stale prediction on replaced interworking branch"
884	depends on CPU_V7
885	help
886	  This option enables the workaround for the 430973 Cortex-A8
887	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
888	  interworking branch is replaced with another code sequence at the
889	  same virtual address, whether due to self-modifying code or virtual
890	  to physical address re-mapping, Cortex-A8 does not recover from the
891	  stale interworking branch prediction. This results in Cortex-A8
892	  executing the new code sequence in the incorrect ARM or Thumb state.
893	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
894	  and also flushes the branch target cache at every context switch.
895	  Note that setting specific bits in the ACTLR register may not be
896	  available in non-secure mode.
897
898config ARM_ERRATA_458693
899	bool "ARM errata: Processor deadlock when a false hazard is created"
900	depends on CPU_V7
901	help
902	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
903	  erratum. For very specific sequences of memory operations, it is
904	  possible for a hazard condition intended for a cache line to instead
905	  be incorrectly associated with a different cache line. This false
906	  hazard might then cause a processor deadlock. The workaround enables
907	  the L1 caching of the NEON accesses and disables the PLD instruction
908	  in the ACTLR register. Note that setting specific bits in the ACTLR
909	  register may not be available in non-secure mode.
910
911config ARM_ERRATA_460075
912	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
913	depends on CPU_V7
914	help
915	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
916	  erratum. Any asynchronous access to the L2 cache may encounter a
917	  situation in which recent store transactions to the L2 cache are lost
918	  and overwritten with stale memory contents from external memory. The
919	  workaround disables the write-allocate mode for the L2 cache via the
920	  ACTLR register. Note that setting specific bits in the ACTLR register
921	  may not be available in non-secure mode.
922
923endmenu
924
925source "arch/arm/common/Kconfig"
926
927config FORCE_MAX_ZONEORDER
928	int
929	depends on SA1111
930	default "9"
931
932menu "Bus support"
933
934config ARM_AMBA
935	bool
936
937config ISA
938	bool
939	help
940	  Find out whether you have ISA slots on your motherboard.  ISA is the
941	  name of a bus system, i.e. the way the CPU talks to the other stuff
942	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
943	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
944	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
945
946# Select ISA DMA controller support
947config ISA_DMA
948	bool
949	select ISA_DMA_API
950
951# Select ISA DMA interface
952config ISA_DMA_API
953	bool
954
955config PCI
956	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
957	help
958	  Find out whether you have a PCI motherboard. PCI is the name of a
959	  bus system, i.e. the way the CPU talks to the other stuff inside
960	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
961	  VESA. If you have PCI, say Y, otherwise N.
962
963config PCI_SYSCALL
964	def_bool PCI
965
966# Select the host bridge type
967config PCI_HOST_VIA82C505
968	bool
969	depends on PCI && ARCH_SHARK
970	default y
971
972config PCI_HOST_ITE8152
973	bool
974	depends on PCI && MACH_ARMCORE
975	default y
976	select DMABOUNCE
977
978source "drivers/pci/Kconfig"
979
980source "drivers/pcmcia/Kconfig"
981
982endmenu
983
984menu "Kernel Features"
985
986source "kernel/time/Kconfig"
987
988config SMP
989	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
990	depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
991		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
992	depends on GENERIC_CLOCKEVENTS
993	select USE_GENERIC_SMP_HELPERS
994	select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
995	help
996	  This enables support for systems with more than one CPU. If you have
997	  a system with only one CPU, like most personal computers, say N. If
998	  you have a system with more than one CPU, say Y.
999
1000	  If you say N here, the kernel will run on single and multiprocessor
1001	  machines, but will use only one CPU of a multiprocessor machine. If
1002	  you say Y here, the kernel will run on many, but not all, single
1003	  processor machines. On a single processor machine, the kernel will
1004	  run faster if you say N here.
1005
1006	  See also <file:Documentation/i386/IO-APIC.txt>,
1007	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1008	  <http://www.linuxdoc.org/docs.html#howto>.
1009
1010	  If you don't know what to do here, say N.
1011
1012config HAVE_ARM_SCU
1013	bool
1014	depends on SMP
1015	help
1016	  This option enables support for the ARM system coherency unit
1017
1018config HAVE_ARM_TWD
1019	bool
1020	depends on SMP
1021	help
1022	  This options enables support for the ARM timer and watchdog unit
1023
1024choice
1025	prompt "Memory split"
1026	default VMSPLIT_3G
1027	help
1028	  Select the desired split between kernel and user memory.
1029
1030	  If you are not absolutely sure what you are doing, leave this
1031	  option alone!
1032
1033	config VMSPLIT_3G
1034		bool "3G/1G user/kernel split"
1035	config VMSPLIT_2G
1036		bool "2G/2G user/kernel split"
1037	config VMSPLIT_1G
1038		bool "1G/3G user/kernel split"
1039endchoice
1040
1041config PAGE_OFFSET
1042	hex
1043	default 0x40000000 if VMSPLIT_1G
1044	default 0x80000000 if VMSPLIT_2G
1045	default 0xC0000000
1046
1047config NR_CPUS
1048	int "Maximum number of CPUs (2-32)"
1049	range 2 32
1050	depends on SMP
1051	default "4"
1052
1053config HOTPLUG_CPU
1054	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1055	depends on SMP && HOTPLUG && EXPERIMENTAL
1056	help
1057	  Say Y here to experiment with turning CPUs off and on.  CPUs
1058	  can be controlled through /sys/devices/system/cpu.
1059
1060config LOCAL_TIMERS
1061	bool "Use local timer interrupts"
1062	depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1063		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1064	default y
1065	select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1066	help
1067	  Enable support for local timers on SMP platforms, rather then the
1068	  legacy IPI broadcast method.  Local timers allows the system
1069	  accounting to be spread across the timer interval, preventing a
1070	  "thundering herd" at every timer tick.
1071
1072source kernel/Kconfig.preempt
1073
1074config HZ
1075	int
1076	default 128 if ARCH_L7200
1077	default 200 if ARCH_EBSA110 || ARCH_S3C2410
1078	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1079	default AT91_TIMER_HZ if ARCH_AT91
1080	default 100
1081
1082config THUMB2_KERNEL
1083	bool "Compile the kernel in Thumb-2 mode"
1084	depends on CPU_V7 && EXPERIMENTAL
1085	select AEABI
1086	select ARM_ASM_UNIFIED
1087	help
1088	  By enabling this option, the kernel will be compiled in
1089	  Thumb-2 mode. A compiler/assembler that understand the unified
1090	  ARM-Thumb syntax is needed.
1091
1092	  If unsure, say N.
1093
1094config ARM_ASM_UNIFIED
1095	bool
1096
1097config AEABI
1098	bool "Use the ARM EABI to compile the kernel"
1099	help
1100	  This option allows for the kernel to be compiled using the latest
1101	  ARM ABI (aka EABI).  This is only useful if you are using a user
1102	  space environment that is also compiled with EABI.
1103
1104	  Since there are major incompatibilities between the legacy ABI and
1105	  EABI, especially with regard to structure member alignment, this
1106	  option also changes the kernel syscall calling convention to
1107	  disambiguate both ABIs and allow for backward compatibility support
1108	  (selected with CONFIG_OABI_COMPAT).
1109
1110	  To use this you need GCC version 4.0.0 or later.
1111
1112config OABI_COMPAT
1113	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1114	depends on AEABI && EXPERIMENTAL
1115	default y
1116	help
1117	  This option preserves the old syscall interface along with the
1118	  new (ARM EABI) one. It also provides a compatibility layer to
1119	  intercept syscalls that have structure arguments which layout
1120	  in memory differs between the legacy ABI and the new ARM EABI
1121	  (only for non "thumb" binaries). This option adds a tiny
1122	  overhead to all syscalls and produces a slightly larger kernel.
1123	  If you know you'll be using only pure EABI user space then you
1124	  can say N here. If this option is not selected and you attempt
1125	  to execute a legacy ABI binary then the result will be
1126	  UNPREDICTABLE (in fact it can be predicted that it won't work
1127	  at all). If in doubt say Y.
1128
1129config ARCH_HAS_HOLES_MEMORYMODEL
1130	bool
1131
1132# Discontigmem is deprecated
1133config ARCH_DISCONTIGMEM_ENABLE
1134	bool
1135
1136config ARCH_SPARSEMEM_ENABLE
1137	bool
1138
1139config ARCH_SPARSEMEM_DEFAULT
1140	def_bool ARCH_SPARSEMEM_ENABLE
1141
1142config ARCH_SELECT_MEMORY_MODEL
1143	def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1144
1145config NODES_SHIFT
1146	int
1147	default "4" if ARCH_LH7A40X
1148	default "2"
1149	depends on NEED_MULTIPLE_NODES
1150
1151config HIGHMEM
1152	bool "High Memory Support (EXPERIMENTAL)"
1153	depends on MMU && EXPERIMENTAL
1154	help
1155	  The address space of ARM processors is only 4 Gigabytes large
1156	  and it has to accommodate user address space, kernel address
1157	  space as well as some memory mapped IO. That means that, if you
1158	  have a large amount of physical memory and/or IO, not all of the
1159	  memory can be "permanently mapped" by the kernel. The physical
1160	  memory that is not permanently mapped is called "high memory".
1161
1162	  Depending on the selected kernel/user memory split, minimum
1163	  vmalloc space and actual amount of RAM, you may not need this
1164	  option which should result in a slightly faster kernel.
1165
1166	  If unsure, say n.
1167
1168config HIGHPTE
1169	bool "Allocate 2nd-level pagetables from highmem"
1170	depends on HIGHMEM
1171	depends on !OUTER_CACHE
1172
1173source "mm/Kconfig"
1174
1175config LEDS
1176	bool "Timer and CPU usage LEDs"
1177	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1178		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
1179		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1180		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1181		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1182		   ARCH_AT91 || ARCH_DAVINCI || \
1183		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1184	help
1185	  If you say Y here, the LEDs on your machine will be used
1186	  to provide useful information about your current system status.
1187
1188	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
1189	  be able to select which LEDs are active using the options below. If
1190	  you are compiling a kernel for the EBSA-110 or the LART however, the
1191	  red LED will simply flash regularly to indicate that the system is
1192	  still functional. It is safe to say Y here if you have a CATS
1193	  system, but the driver will do nothing.
1194
1195config LEDS_TIMER
1196	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1197			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1198			    || MACH_OMAP_PERSEUS2
1199	depends on LEDS
1200	depends on !GENERIC_CLOCKEVENTS
1201	default y if ARCH_EBSA110
1202	help
1203	  If you say Y here, one of the system LEDs (the green one on the
1204	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
1205	  will flash regularly to indicate that the system is still
1206	  operational. This is mainly useful to kernel hackers who are
1207	  debugging unstable kernels.
1208
1209	  The LART uses the same LED for both Timer LED and CPU usage LED
1210	  functions. You may choose to use both, but the Timer LED function
1211	  will overrule the CPU usage LED.
1212
1213config LEDS_CPU
1214	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1215			!ARCH_OMAP) \
1216			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1217			|| MACH_OMAP_PERSEUS2
1218	depends on LEDS
1219	help
1220	  If you say Y here, the red LED will be used to give a good real
1221	  time indication of CPU usage, by lighting whenever the idle task
1222	  is not currently executing.
1223
1224	  The LART uses the same LED for both Timer LED and CPU usage LED
1225	  functions. You may choose to use both, but the Timer LED function
1226	  will overrule the CPU usage LED.
1227
1228config ALIGNMENT_TRAP
1229	bool
1230	depends on CPU_CP15_MMU
1231	default y if !ARCH_EBSA110
1232	help
1233	  ARM processors cannot fetch/store information which is not
1234	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1235	  address divisible by 4. On 32-bit ARM processors, these non-aligned
1236	  fetch/store instructions will be emulated in software if you say
1237	  here, which has a severe performance impact. This is necessary for
1238	  correct operation of some network protocols. With an IP-only
1239	  configuration it is safe to say N, otherwise say Y.
1240
1241config UACCESS_WITH_MEMCPY
1242	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1243	depends on MMU && EXPERIMENTAL
1244	default y if CPU_FEROCEON
1245	help
1246	  Implement faster copy_to_user and clear_user methods for CPU
1247	  cores where a 8-word STM instruction give significantly higher
1248	  memory write throughput than a sequence of individual 32bit stores.
1249
1250	  A possible side effect is a slight increase in scheduling latency
1251	  between threads sharing the same address space if they invoke
1252	  such copy operations with large buffers.
1253
1254	  However, if the CPU data cache is using a write-allocate mode,
1255	  this option is unlikely to provide any performance gain.
1256
1257endmenu
1258
1259menu "Boot options"
1260
1261# Compressed boot loader in ROM.  Yes, we really want to ask about
1262# TEXT and BSS so we preserve their values in the config files.
1263config ZBOOT_ROM_TEXT
1264	hex "Compressed ROM boot loader base address"
1265	default "0"
1266	help
1267	  The physical address at which the ROM-able zImage is to be
1268	  placed in the target.  Platforms which normally make use of
1269	  ROM-able zImage formats normally set this to a suitable
1270	  value in their defconfig file.
1271
1272	  If ZBOOT_ROM is not enabled, this has no effect.
1273
1274config ZBOOT_ROM_BSS
1275	hex "Compressed ROM boot loader BSS address"
1276	default "0"
1277	help
1278	  The base address of an area of read/write memory in the target
1279	  for the ROM-able zImage which must be available while the
1280	  decompressor is running. It must be large enough to hold the
1281	  entire decompressed kernel plus an additional 128 KiB.
1282	  Platforms which normally make use of ROM-able zImage formats
1283	  normally set this to a suitable value in their defconfig file.
1284
1285	  If ZBOOT_ROM is not enabled, this has no effect.
1286
1287config ZBOOT_ROM
1288	bool "Compressed boot loader in ROM/flash"
1289	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1290	help
1291	  Say Y here if you intend to execute your compressed kernel image
1292	  (zImage) directly from ROM or flash.  If unsure, say N.
1293
1294config CMDLINE
1295	string "Default kernel command string"
1296	default ""
1297	help
1298	  On some architectures (EBSA110 and CATS), there is currently no way
1299	  for the boot loader to pass arguments to the kernel. For these
1300	  architectures, you should supply some command-line options at build
1301	  time by entering them here. As a minimum, you should specify the
1302	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
1303
1304config XIP_KERNEL
1305	bool "Kernel Execute-In-Place from ROM"
1306	depends on !ZBOOT_ROM
1307	help
1308	  Execute-In-Place allows the kernel to run from non-volatile storage
1309	  directly addressable by the CPU, such as NOR flash. This saves RAM
1310	  space since the text section of the kernel is not loaded from flash
1311	  to RAM.  Read-write sections, such as the data section and stack,
1312	  are still copied to RAM.  The XIP kernel is not compressed since
1313	  it has to run directly from flash, so it will take more space to
1314	  store it.  The flash address used to link the kernel object files,
1315	  and for storing it, is configuration dependent. Therefore, if you
1316	  say Y here, you must know the proper physical address where to
1317	  store the kernel image depending on your own flash memory usage.
1318
1319	  Also note that the make target becomes "make xipImage" rather than
1320	  "make zImage" or "make Image".  The final kernel binary to put in
1321	  ROM memory will be arch/arm/boot/xipImage.
1322
1323	  If unsure, say N.
1324
1325config XIP_PHYS_ADDR
1326	hex "XIP Kernel Physical Location"
1327	depends on XIP_KERNEL
1328	default "0x00080000"
1329	help
1330	  This is the physical address in your flash memory the kernel will
1331	  be linked for and stored to.  This address is dependent on your
1332	  own flash usage.
1333
1334config KEXEC
1335	bool "Kexec system call (EXPERIMENTAL)"
1336	depends on EXPERIMENTAL
1337	help
1338	  kexec is a system call that implements the ability to shutdown your
1339	  current kernel, and to start another kernel.  It is like a reboot
1340	  but it is independent of the system firmware.   And like a reboot
1341	  you can start any kernel with it, not just Linux.
1342
1343	  It is an ongoing process to be certain the hardware in a machine
1344	  is properly shutdown, so do not be surprised if this code does not
1345	  initially work for you.  It may help to enable device hotplugging
1346	  support.
1347
1348config ATAGS_PROC
1349	bool "Export atags in procfs"
1350	depends on KEXEC
1351	default y
1352	help
1353	  Should the atags used to boot the kernel be exported in an "atags"
1354	  file in procfs. Useful with kexec.
1355
1356endmenu
1357
1358menu "CPU Power Management"
1359
1360if ARCH_HAS_CPUFREQ
1361
1362source "drivers/cpufreq/Kconfig"
1363
1364config CPU_FREQ_SA1100
1365	bool
1366
1367config CPU_FREQ_SA1110
1368	bool
1369
1370config CPU_FREQ_INTEGRATOR
1371	tristate "CPUfreq driver for ARM Integrator CPUs"
1372	depends on ARCH_INTEGRATOR && CPU_FREQ
1373	default y
1374	help
1375	  This enables the CPUfreq driver for ARM Integrator CPUs.
1376
1377	  For details, take a look at <file:Documentation/cpu-freq>.
1378
1379	  If in doubt, say Y.
1380
1381config CPU_FREQ_PXA
1382	bool
1383	depends on CPU_FREQ && ARCH_PXA && PXA25x
1384	default y
1385	select CPU_FREQ_DEFAULT_GOV_USERSPACE
1386
1387config CPU_FREQ_S3C64XX
1388	bool "CPUfreq support for Samsung S3C64XX CPUs"
1389	depends on CPU_FREQ && CPU_S3C6410
1390
1391config CPU_FREQ_S3C
1392	bool
1393	help
1394	  Internal configuration node for common cpufreq on Samsung SoC
1395
1396config CPU_FREQ_S3C24XX
1397	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1398	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1399	select CPU_FREQ_S3C
1400	help
1401	  This enables the CPUfreq driver for the Samsung S3C24XX family
1402	  of CPUs.
1403
1404	  For details, take a look at <file:Documentation/cpu-freq>.
1405
1406	  If in doubt, say N.
1407
1408config CPU_FREQ_S3C24XX_PLL
1409	bool "Support CPUfreq changing of PLL frequency"
1410	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1411	help
1412	  Compile in support for changing the PLL frequency from the
1413	  S3C24XX series CPUfreq driver. The PLL takes time to settle
1414	  after a frequency change, so by default it is not enabled.
1415
1416	  This also means that the PLL tables for the selected CPU(s) will
1417	  be built which may increase the size of the kernel image.
1418
1419config CPU_FREQ_S3C24XX_DEBUG
1420	bool "Debug CPUfreq Samsung driver core"
1421	depends on CPU_FREQ_S3C24XX
1422	help
1423	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1424
1425config CPU_FREQ_S3C24XX_IODEBUG
1426	bool "Debug CPUfreq Samsung driver IO timing"
1427	depends on CPU_FREQ_S3C24XX
1428	help
1429	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1430
1431config CPU_FREQ_S3C24XX_DEBUGFS
1432	bool "Export debugfs for CPUFreq"
1433	depends on CPU_FREQ_S3C24XX && DEBUG_FS
1434	help
1435	  Export status information via debugfs.
1436
1437endif
1438
1439source "drivers/cpuidle/Kconfig"
1440
1441endmenu
1442
1443menu "Floating point emulation"
1444
1445comment "At least one emulation must be selected"
1446
1447config FPE_NWFPE
1448	bool "NWFPE math emulation"
1449	depends on !AEABI || OABI_COMPAT
1450	---help---
1451	  Say Y to include the NWFPE floating point emulator in the kernel.
1452	  This is necessary to run most binaries. Linux does not currently
1453	  support floating point hardware so you need to say Y here even if
1454	  your machine has an FPA or floating point co-processor podule.
1455
1456	  You may say N here if you are going to load the Acorn FPEmulator
1457	  early in the bootup.
1458
1459config FPE_NWFPE_XP
1460	bool "Support extended precision"
1461	depends on FPE_NWFPE
1462	help
1463	  Say Y to include 80-bit support in the kernel floating-point
1464	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1465	  Note that gcc does not generate 80-bit operations by default,
1466	  so in most cases this option only enlarges the size of the
1467	  floating point emulator without any good reason.
1468
1469	  You almost surely want to say N here.
1470
1471config FPE_FASTFPE
1472	bool "FastFPE math emulation (EXPERIMENTAL)"
1473	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1474	---help---
1475	  Say Y here to include the FAST floating point emulator in the kernel.
1476	  This is an experimental much faster emulator which now also has full
1477	  precision for the mantissa.  It does not support any exceptions.
1478	  It is very simple, and approximately 3-6 times faster than NWFPE.
1479
1480	  It should be sufficient for most programs.  It may be not suitable
1481	  for scientific calculations, but you have to check this for yourself.
1482	  If you do not feel you need a faster FP emulation you should better
1483	  choose NWFPE.
1484
1485config VFP
1486	bool "VFP-format floating point maths"
1487	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1488	help
1489	  Say Y to include VFP support code in the kernel. This is needed
1490	  if your hardware includes a VFP unit.
1491
1492	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
1493	  release notes and additional status information.
1494
1495	  Say N if your target does not have VFP hardware.
1496
1497config VFPv3
1498	bool
1499	depends on VFP
1500	default y if CPU_V7
1501
1502config NEON
1503	bool "Advanced SIMD (NEON) Extension support"
1504	depends on VFPv3 && CPU_V7
1505	help
1506	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1507	  Extension.
1508
1509endmenu
1510
1511menu "Userspace binary formats"
1512
1513source "fs/Kconfig.binfmt"
1514
1515config ARTHUR
1516	tristate "RISC OS personality"
1517	depends on !AEABI
1518	help
1519	  Say Y here to include the kernel code necessary if you want to run
1520	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
1521	  experimental; if this sounds frightening, say N and sleep in peace.
1522	  You can also say M here to compile this support as a module (which
1523	  will be called arthur).
1524
1525endmenu
1526
1527menu "Power management options"
1528
1529source "kernel/power/Kconfig"
1530
1531config ARCH_SUSPEND_POSSIBLE
1532	def_bool y
1533
1534endmenu
1535
1536source "net/Kconfig"
1537
1538source "drivers/Kconfig"
1539
1540source "fs/Kconfig"
1541
1542source "arch/arm/Kconfig.debug"
1543
1544source "security/Kconfig"
1545
1546source "crypto/Kconfig"
1547
1548source "lib/Kconfig"
1549